fix GhcUnregisterised default, and add kfreebsdgnu to OsSupportsGhci (#5441)
fix GhcUnregisterised default, and add kfreebsdgnu to OsSupportsGhci
(#5441)

snoyberg/ghc,nomeata/ghc,acowley/ghc,christiaanb/ghc,shlevy/ghc,gcampax/ghc,bitemyapp/ghc,sdiehl/ghc,green-haskell/ghc,olsner/ghc,ekmett/ghc,forked-upstream-packages-for-ghcjs/ghc,mettekou/ghc,green-haskell/ghc,ekmett/ghc,fmthoma/ghc,ezyang/ghc,vTurbine/ghc,vikraman/ghc,mcmaniac/ghc,hferreiro/replay,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,acowley/ghc,mfine/ghc,AlexanderPankiv/ghc,anton-dessiatov/ghc,AlexanderPankiv/ghc,fmthoma/ghc,gcampax/ghc,nomeata/ghc,nathyong/microghc-ghc,mettekou/ghc,lukexi/ghc-7.8-arm64,AlexanderPankiv/ghc,lukexi/ghc,ezyang/ghc,AlexanderPankiv/ghc,nushio3/ghc,lukexi/ghc,siddhanathan/ghc,TomMD/ghc,olsner/ghc,ghc-android/ghc,anton-dessiatov/ghc,ghc-android/ghc,wxwxwwxxx/ghc,nkaretnikov/ghc,ezyang/ghc,snoyberg/ghc,oldmanmike/ghc,da-x/ghc,olsner/ghc,ghc-android/ghc,shlevy/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,mettekou/ghc,siddhanathan/ghc,sgillespie/ghc,gcampax/ghc,wxwxwwxxx/ghc,green-haskell/ghc,forked-upstream-packages-for-ghcjs/ghc,gridaphobe/ghc,frantisekfarka/ghc-dsi,mfine/ghc,urbanslug/ghc,lukexi/ghc-7.8-arm64,mcmaniac/ghc,anton-dessiatov/ghc,acowley/ghc,lukexi/ghc-7.8-arm64,christiaanb/ghc,vikraman/ghc,sdiehl/ghc,jstolarek/ghc,nkaretnikov/ghc,nushio3/ghc,ml9951/ghc,da-x/ghc,ryantm/ghc,olsner/ghc,snoyberg/ghc,snoyberg/ghc,gridaphobe/ghc,siddhanathan/ghc,nathyong/microghc-ghc,urbanslug/ghc,christiaanb/ghc,hferreiro/replay,oldmanmike/ghc,lukexi/ghc,AlexanderPankiv/ghc,tibbe/ghc,bitemyapp/ghc,ryantm/ghc,siddhanathan/ghc,mcmaniac/ghc,wxwxwwxxx/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,ghc-android/ghc,vTurbine/ghc,TomMD/ghc,snoyberg/ghc,mcschroeder/ghc,anton-dessiatov/ghc,elieux/ghc,christiaanb/ghc,vikraman/ghc,GaloisInc/halvm-ghc,frantisekfarka/ghc-dsi,urbanslug/ghc,hferreiro/replay,mfine/ghc,vTurbine/ghc,nushio3/ghc,fmthoma/ghc,olsner/ghc,gcampax/ghc,ml9951/ghc,AlexanderPankiv/ghc,mcschroeder/ghc,fmthoma/ghc,olsner/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,shlevy/ghc,nushio3/ghc,ezyang/ghc,gridaphobe/ghc,oldmanmike/ghc,elieux/ghc,nushio3/ghc,jstolarek/ghc,mettekou/ghc,sdiehl/ghc,urbanslug/ghc,ilyasergey/GHC-XAppFix,tjakway/ghcjvm,nathyong/microghc-ghc,green-haskell/ghc,green-haskell/ghc,ezyang/ghc,anton-dessiatov/ghc,elieux/ghc,holzensp/ghc,sgillespie/ghc,lukexi/ghc-7.8-arm64,TomMD/ghc,jstolarek/ghc,vikraman/ghc,frantisekfarka/ghc-dsi,vikraman/ghc,ezyang/ghc,ml9951/ghc,vikraman/ghc,sdiehl/ghc,christiaanb/ghc,ilyasergey/GHC-XAppFix,oldmanmike/ghc,tjakway/ghcjvm,da-x/ghc,mcschroeder/ghc,tjakway/ghcjvm,AlexanderPankiv/ghc,mfine/ghc,tibbe/ghc,nomeata/ghc,sgillespie/ghc,elieux/ghc,oldmanmike/ghc,elieux/ghc,GaloisInc/halvm-ghc,ekmett/ghc,ml9951/ghc,holzensp/ghc,sgillespie/ghc,frantisekfarka/ghc-dsi,acowley/ghc,fmthoma/ghc,ekmett/ghc,hferreiro/replay,wxwxwwxxx/ghc,nkaretnikov/ghc,holzensp/ghc,lukexi/ghc,vTurbine/ghc,urbanslug/ghc,bitemyapp/ghc,nkaretnikov/ghc,sgillespie/ghc,nushio3/ghc,gridaphobe/ghc,oldmanmike/ghc,acowley/ghc,mfine/ghc,mettekou/ghc,urbanslug/ghc,sgillespie/ghc,ryantm/ghc,elieux/ghc,nathyong/microghc-ghc,spacekitteh/smcghc,tibbe/ghc,frantisekfarka/ghc-dsi,wxwxwwxxx/ghc,GaloisInc/halvm-ghc,fmthoma/ghc,GaloisInc/halvm-ghc,spacekitteh/smcghc,mcmaniac/ghc,holzensp/ghc,urbanslug/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,snoyberg/ghc,spacekitteh/smcghc,mettekou/ghc,ghc-android/ghc,tjakway/ghcjvm,mcschroeder/ghc,shlevy/ghc,shlevy/ghc,gcampax/ghc,tibbe/ghc,olsner/ghc,sgillespie/ghc,gridaphobe/ghc,gridaphobe/ghc,gcampax/ghc,ghc-android/ghc,lukexi/ghc-7.8-arm64,tjakway/ghcjvm,acowley/ghc,TomMD/ghc,hferreiro/replay,gcampax/ghc,mcschroeder/ghc,hferreiro/replay,shlevy/ghc,fmthoma/ghc,ilyasergey/GHC-XAppFix,ml9951/ghc,lukexi/ghc,mfine/ghc,christiaanb/ghc,nushio3/ghc,ghc-android/ghc,vTurbine/ghc,nkaretnikov/ghc,sdiehl/ghc,holzensp/ghc,bitemyapp/ghc,mfine/ghc,siddhanathan/ghc,ml9951/ghc,snoyberg/ghc,oldmanmike/ghc,spacekitteh/smcghc,ryantm/ghc,christiaanb/ghc,da-x/ghc,mcschroeder/ghc,nomeata/ghc,mcschroeder/ghc,da-x/ghc,elieux/ghc,anton-dessiatov/ghc,siddhanathan/ghc,ml9951/ghc,shlevy/ghc,ekmett/ghc,siddhanathan/ghc,ezyang/ghc,mettekou/ghc,forked-upstream-packages-for-ghcjs/ghc,vikraman/ghc,ryantm/ghc,bitemyapp/ghc,da-x/ghc,spacekitteh/smcghc,da-x/ghc,ml9951/ghc,jstolarek/ghc,anton-dessiatov/ghc,tjakway/ghcjvm,jstolarek/ghc,nkaretnikov/ghc,tibbe/ghc,hferreiro/replay,ilyasergey/GHC-XAppFix,nomeata/ghc,mcmaniac/ghc,vTurbine/ghc,vTurbine/ghc,wxwxwwxxx/ghc,TomMD/ghc,TomMD/ghc,forked-upstream-packages-for-ghcjs/ghc,sdiehl/ghc,sdiehl/ghc,acowley/ghc,TomMD/ghc,GaloisInc/halvm-ghc,nkaretnikov/ghc,forked-upstream-packages-for-ghcjs/ghc